Win7 x64: KB4534310 fails with "not applicable" despite all prerequisites met

Hello everyone,

I'm facing a persistent issue trying to install update KB4534310 on a *Windows 7 Professional SP1 (x64)* system. Despite thorough preparation, the installer fails with "This update is not applicable to your computer."

*System Configuration:*
- *OS:* Windows 7 Professional Service Pack 1, build 7601
- *Architecture:* x64
- *Language:* Russian
- *Registry data:* EditionID=Professional, InstallationType=Client

*Prerequisites installed (in order):*
1. ✅ KB4490628 (Servicing Stack Update)
2. ✅ KB4474419 (SHA-2 Update) 
3. ✅ KB4536952 (Service Stack Update)

*Diagnostics & repairs performed:*
- *Windows Update components reset:* Stopped services (wuauserv, cryptSvc, bits, msiserver), renamed SoftwareDistribution and catroot2 folders, restarted services.
- *System file check:* sfc /scannow completed successfully - no integrity violations found.
- *Registry check:* EditionID, ProductName, InstallationType all show correct values.
- *Service status:* All relevant services are running properly.

*The Problem:*
After all preparations, the KB4534310 installer (downloaded both via Windows Update and manually from Microsoft Update Catalog) consistently gives error: *"This update is not applicable to your computer."*

*Notable observation:*
The C:\Windows\Logs\WindowsUpdate folder is missing on the system, even after completely resetting Windows Update components.

I would greatly appreciate any help in identifying the root cause. Are there any additional logs or diagnostic tools that could pinpoint the issue? Has anyone encountered a similar situation?

Thank you in advance for any suggestions!